Retort type liquid fuel burner with flame deflector and starting pan



" Aug. 8, 1950 5 w WARGQ 2,517,949

RETORT TYPE LIQUIDFUEL BURNER WITH FLAME DEFLECTOR AND STARTING PANFiled Feb. 27, 1947 2 Sheets-Sheet l Ill l/l Fig. 2.

Inventor George W Wargo Aug. 8, 1950 Filed Feb. 27, 1947 G. w. WARGO2,517,949 RETORT TYPE LIQUID FUEL BURNER WITH FLAME DEFLECTOR ANDSTARTING PAN 2 Sheets-Sheet 2 Fig. 4.

I u g George W Wargo 24 12 Inventor M WW lim Patented Aug. 8, 1950 TENTOFFICE 'RETQRT TYPE LIQUID FUEL BURNER WITH 7 FLAME DEFLECTOR ANDSTARTING PAN I "George VVargo, Live Oak, Fla. Application February 27,1947, :Serial No. 731,302

' '2 Claims. (01. 158- 70) My invention relates to improvements in'fueloil burners for heating tobacco"barnse uiDPQd with heat conducting andradiating lines.

The primary object of the inve'ntionis to provide a simply-constructed,inexpensive and efficient burner adapted *for easy connection. to suchlines from outside a tobacco barn'and which is economical to operate,does not require forced draft, and provides a hotter flame with 'a givensize of burner a'nd'a lowerrate of fuel consumption than'oth'er'devicesdesigned forsiinilar purposes. V v h Other and subordinate objects, alsocomprehended by my invention, together with the precise nature of mymprqvements and the manifold advantages thereof, will be readilyundenstood when the succeeding description and claims are read with referenceto the drawings accompanying and-forming part of this specifica- Figure2 is a fragmentary View in vertical Jlfont the nipple2 and communicatingwith atmosgitudinal section taken on the line 2-2 of -Figure landdrawn'to a larger scale; ,1,

Figure 3 is a view in -transverse section taken on the line 33 of Figure2 and drawn to a still larger scale;

Figure 4 is a view in horizontal section taken on the line 44 of Figure3.

Referring to the drawings by numerals, my improved burner in theillustrated embodiment thereof comprises, as its basic element, atubular casing I of any suitable length formed preferably of a sectionof pipe, and which is designed to be connected at a front end thereof,in any suitable manner, not shown, to the rear end of a branch nipple 2extended horizontally out of one side of a tobacco barn 3 from a fluesystem 4 adapted to communicate with a smokestack, not shown. As

will be understood, the casing I opens at its front end directly intothe branch nipple 2. The particular type of fluesystem, other than asregards the nipple 2, is not important to the invention and thereforeneed not be entered into further. A rear end wall 5 closes the lowerhalf of the rear end of the casing I and has hinged thereto, as at 6, asemicircular draft control door 'I vertically swingable into opening andclosing positions relative to the upper half of the rear end of saidcasing. A ratchet-toothed bar 8 hinged, as at 9, on the casing I toswing 2 downwardly into an edge notch ID in said door "1 provides forlatchingsaid door I in different open positions. The described casing Iforms a combustion chamber .II therein communicating at its front endwith the flue system 4 by way of pheric air at its rear end by way ofthe draft control door 'I. p

A cylindrical, hollow, fuel pre-heating element I2, substantiallysmaller in diameter than the casing I and having closed ends I3 extendsendwise in the casing diametrically thereof and in the rear position ofsaid casing. A single, longitudinal row of discharge ports If} isprovided in the rear of said prerheating element I2 in the horizontaldiameter thereof and hichmay be of any size suitable for a purposepresently appa nt. .l

Surrounding the fuel pre heatin'g element I2 is a combination baffleandpan element I5, 0f the same length as said element I2, and com prising ahollow shell relatively larger in cross section than said element l2,the major portion I6 of which is cylindricalin cross section with alongitudinally extending, rearwardly, projecting baflle ll ofright-angled cross section extending from end to end of said element I5in the horizontal diameter of the same. The baflle [1, as will be seen,presents aconcave sideto the row of ports I4. End'bottom flanges I8 insaid ele ment I5, together with a bottom segment I9 of said element,form a bottom pan 2B in said element. The flanges I8 fit part way aroundthe bottom of the fuel pre-heating element II and space said elementsI2, I5 apart at the bottoms thereof. A spacing collar 2| between thetops of said elements [2 and I5 space the same apart at the topsthereof. The major portion I6 of said element I5 is concentric to thefuel pre-I heating element I2. A pair of rear, air-inlet slots 22, 23 inthe major portion I6 of said element I5 extend along the top and bottomof the baffle I'I. A substantially wider front slot 24 in said majorportion I6 extends longitudinally 25 and is suitably fixed on top of thecasing l with a set screw 28 therein turned against said line 25 so thatsaid elements I2, 15 are suspended in the casing I by said line 25.

Referring now to the operation'of the described burner. To start theburner, liquid fuel is fed into the fuel pre-heating element 12, by wayof the fuel feed line 25, until the liquid fuel overflows out of theports l4 into the pan 28. The overflow of liquid fuel in the pan 2B isignited through either slot 22 or 23 to preheat the fuel pre-heatingelement 02. When said element l2 has been pre-heated to the propertemperature, the liquid fuel therein is converted into gas which issuesin jet form out of the ports [4 against the concave side of the baflieI! to rebound therefrom and spread around the fuel pre-heating elementI2, such gas being ignited in a manner which will be clear and forming ahot flame completely surrounding the fuel pre-heating element 12 andissuing out of the front slot 24 into the combustion chamber ll. Afterthe burner has been thus started, the flame will maintain the fuelpre-heating element l2 at a high temperature sufficient to convertliquid fuel continued to be fed therein into gas. Atmospheric air isdrawn, by the chimney draft, into the casing I at the rear end thereofand through the combination bafile and pan element I5 which forms amixing chamber for air and gas as will be clear. The draft may beregulated by means of the draft door 1.

The foregoing will, it is believed, suffice to impart a clearunderstanding of my invention without further explanation.

Manifestly, the invention, as described, is susceptible of modification,without departing fromv the inventive concept, and right is hereinreserved to such modifications as fall within the scope of the appendedclaims.

What I claim is:

1. A burner for use with a tubular casing forming a combustion chamber,said burner comprising a, cylindrical hollow fuel pro-heating elementadapted to extend endwise in said cas ing diametrically thereof andprovided with fuel discharger ports therein adapted to discharge towardthe one end of said casing, a liquid fuel feed line to feed liquid fuelinto said pre-heating element, and a shell surrounding said pre-heatingelement in spaced relation thereto and embodying a bottom pan forreceiving liquid fuel discharged out of said ports for ignition to heatsaid pre-heating element and thereby convert liquid fuel therein intogas to issue out of said ports for ignition by the ignited fuel in saidpan, said shell being provided with air inlet slots for admitting airinto the same to mix with such gas, and having an outlet slot for flame,and a baffle embodied in said shell opposite said ports for causing gasto rebound and spread around said pre-heating element.

2. A burner for use with a tubular casing forming a combustion chamber,said burner comprising a cylindrical hollow fuel pre-heating elementadapted to extend endwise in said casing diametrically thereof andprovided with fuel discharger ports therein adapted to discharge towardone end of said casing, a liquid fuel feed line to feed liquid fuel intosaid pre-heating element, a shell surrounding said pre-heating elementin spaced relation thereto and embodying a bottom pan for receivingliquid fuel discharged out of said ports for ignition to heat saidpreheating element and thereby convertliquid fuel therein into gas toissue out of said ports for ignition by the ignited fuel in said pan,said shell being provided with air inlet slots for admitting air intothe same to mixwith such gas, and having an outlet slot for flame, and abaffie embodied in said shell opposite said ports for causing gas torebound and spread around said pre-heating element, said shellbeingsuspended by said fuel feed line in spaced relation to said pre-heatingelement. V I

GEORGE W. WARGO.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 410,826 Edgar Sept. 10, 1889975,244 Howze Nov. 8, 1910 995,088 Pickens June 13, 1911 1,620,932 WhiteMar. 15, 1927

